<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>细说font-size</title>
    <style>
        div {
            font-size: 40px;
            background-color: skyblue;
        }
    </style>
</head>

<body>
    <div>atguigu尚硅谷</div>
    <span style="font-size: 40px; font-family: '微软雅黑';">尚</span>
    <span style="font-size: 40px; font-family: '楷书';">尚</span>
    <span style="font-size: 40px; font-family: '偏偏体-简';">尚</span>
</body>

</html>